6668560 has 20 divisors (see below), whose sum is σ = 15504588. Its totient is φ = 2667392.

The previous prime is 6668549. The next prime is 6668567. The reversal of 6668560 is 658666.

It can be written as a sum of positive squares in 2 ways, for example, as 3341584 + 3326976 = 1828^2 + 1824^2 .

It is a tau number, because it is divible by the number of its divisors (20).

It is not an unprimeable number, because it can be changed into a prime (6668567) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 41599 + ... + 41758.

Almost surely, 2^6668560 is an apocalyptic number.

It is an amenable number.

6668560 is an abundant number, since it is smaller than the sum of its proper divisors (8836028).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

6668560 is a wasteful number, since it uses less digits than its factorization.

6668560 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 83370 (or 83364 counting only the distinct ones).

The product of its (nonzero) digits is 51840, while the sum is 37.

The square root of 6668560 is about 2582.3555138671. The cubic root of 6668560 is about 188.2250210386.

The spelling of 6668560 in words is "six million, six hundred sixty-eight thousand, five hundred sixty".